56715680 has 96 divisors (see below), whose sum is σ = 155312640. Its totient is φ = 19169280.

The previous prime is 56715679. The next prime is 56715683. The reversal of 56715680 is 8651765.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56715683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88160 + ... + 88800.

It is an arithmetic number, because the mean of its divisors is an integer number (1617840).

Almost surely, 2^56715680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56715680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77656320).

56715680 is an abundant number, since it is smaller than the sum of its proper divisors (98596960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56715680 is a wasteful number, since it uses less digits than its factorization.

56715680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 56715680 is about 7530.9813437559. The cubic root of 56715680 is about 384.2091597796.

The spelling of 56715680 in words is "fifty-six million, seven hundred fifteen thousand, six hundred eighty".